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Substance a Is Synthesized in the Liver, Travels Through the Circulatory

Question 53

Multiple Choice

Substance A is synthesized in the liver, travels through the circulatory system bound to a carrier protein, and causes a change in gene expression in a target cell. This is an example of ____.


A) autocrine signaling
B) paracrine signaling
C) long-distance signaling
D) local signaling
E) communication by direct contact

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